ULTRASONIC WAVE GENERATING DEVICE AND ULTRASONIC WAVE GENERATING SYSTEM
European Patent Office Patent
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Abstract
A novel action is applied to an object in the through-hole by improving the shape of a through-hole penetrating an ultrasonic wave converging part and a waveguide. An ultrasonic wave converging part (12) and a waveguide (13) have a through-hole (20) penetrating the ultrasonic wave converging part (12) and the waveguide (13) in a front-rear direction. An inner circumferential surface (20A) forming the through-hole (20) has a first inner circumferential surface (21) and a deformed portion (23) located on a front-end side relative to the first inner circumferential surface (21). The first inner circumferential surface (21) has, as a cross-sectional shape taken in the front-rear direction, a shape linearly extending in the front-rear direction. The deformed portion (23) is, in a cross section taken in the front-rear direction, at least one of a portion located inward of the first inner circumferential surface (21) and a portion located outward of the first inner circumferential surface (21) (in an example shown in Fig. 1, the portion located inward of the first inner circumferential surface (21)), and is formed in a part of or over an entire circumference (in the example shown in Fig. 1, the entire circumference) of the inner circumferential surface (20A) in a circumferential direction.
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Cited Art Landscape
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